CN218241949U

CN218241949U - Electrolyte recovery device for soft package battery

Info

Publication number: CN218241949U
Application number: CN202221695536.6U
Authority: CN
Inventors: 王云鹤; 郭育辰; 马宝霞; 傅金花; 曹旭鹏
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2023-01-06
Anticipated expiration: 2032-06-30

Abstract

The utility model provides an electrolyte recovery unit for laminate polymer battery, recovery unit includes base, first evacuation subassembly and second evacuation subassembly, retrieves storehouse and clamp plate subassembly, be provided with the chamber that holds that is used for holding laminate polymer battery on the base, first evacuation subassembly intercommunication extremely hold the chamber. And under the condition that a soft package battery is arranged in the accommodating cavity, the first vacuumizing assembly sucks the vacuum degree in the accommodating cavity to a set vacuum degree so as to ensure the vacuum degree of the accommodating cavity and the recovery bin. And the clamp plate subassembly can exert pressure and give laminate polymer battery to retrieve electrolyte when making laminate polymer battery in the exhaust waste gas extremely retrieve the storehouse, moreover electrolyte in laminate polymer battery retrieve extremely the in-process in recovery storehouse can keep holding the vacuum in chamber, the recovery purity and the recycle ratio of electrolyte when having guaranteed laminate polymer battery in the exhaust gas discharge.

Description

Electrolyte recovery device for soft package battery

Technical Field

The utility model belongs to the technical field of the battery pack component is retrieved, specifically, the utility model relates to an electrolyte recovery unit for laminate polymer battery.

Background

Lithium batteries generally comprise a pole piece formed by attaching positive and negative electrode materials formed of lithium metal or lithium alloy to a metal current collector, and an electrolyte formed of a nonaqueous electrolyte solution. Wherein, two evacuation of sealing of soft packet of lithium ion battery seal the process in, the free electrolyte in the soft packet of battery also can be along with punctureing the mouth outflow when discharging waste gas in the soft packet of battery, if can effectively retrieve electrolyte, then can bring extra economic value.

The existing vacuumizing sealing process of the lithium battery easily causes waste gas to be discharged and simultaneously causes the contact between the flowing electrolyte and air, so that the recycling value of the electrolyte is reduced; and most of electrolyte can be directly volatilized in the equipment environment as waste liquid, so that the environment is greatly polluted, and meanwhile, the waste is greatly caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a new technical scheme for laminate polymer battery's electrolyte recovery unit.

According to the utility model discloses an aspect provides an electrolyte recovery unit for laminate polymer battery, include:

the battery pack comprises a base, wherein an accommodating cavity for accommodating a soft package battery is formed in the base;

the first vacuumizing assembly is communicated to the accommodating cavity and is used for vacuumizing the vacuum degree in the accommodating cavity to a set vacuum degree;

the recovery bin is connected between the second vacuumizing assembly and the accommodating cavity;

a platen assembly coupled to the base, the platen assembly configured to apply pressure to the pouch cell;

hold and be provided with laminate polymer battery's in the chamber under, first evacuation subassembly will hold the vacuum suction of intracavity to setting for the vacuum, the clamp plate subassembly is exerted pressure and is given laminate polymer battery to retrieve electrolyte when making laminate polymer battery middle discharge waste gas extremely retrieve the storehouse.

Optionally, the gas bag further comprises a bayonet component, the bayonet component is connected to the base and is used for puncturing the gas bag of the pouch battery when the vacuum degree in the accommodating cavity reaches a set vacuum degree, so that part of electrolyte in the pouch battery is discharged from a puncturing opening of the gas bag along with waste gas.

Optionally, still include the encapsulation subassembly, the encapsulation subassembly connect in on the base, the encapsulation subassembly is arranged in electrolyte in the laminate polymer battery to encapsulate the air pocket after flowing out from the air pocket to make laminate polymer battery seal.

Optionally, the packaging assembly includes a first packaging member and a second packaging member, and when the packaging assembly packages the air bag, the first packaging member and the second packaging member abut against the air bag from opposite sides of the air bag.

Optionally, the recycling bin and the accommodating cavity are communicated through a vacuum tube, a recycling support is arranged on one side, close to the accommodating cavity, of the vacuum tube, and a first switch assembly is arranged on one side, close to the recycling bin, of the vacuum tube.

Optionally, the recycling bracket comprises an upper bracket and a lower bracket which are connected with each other, and a sealed cavity is formed between the upper bracket and the lower bracket;

the upper support is provided with a bayonet opening communicated with the sealing cavity, and the lower support is provided with a liquid leakage opening communicated with the vacuum tube.

Optionally, the device further comprises a baffle structure, an opening communicated with the sealed cavity is arranged on the upper bracket and/or the lower bracket, and the baffle structure is connected to the sealed cavity through the opening;

the baffle plate structure is used for closing the opening under the condition that the bayonet component punctures an air bag of the soft package battery through the bayonet opening and enables electrolyte in the soft package battery to flow into the sealing cavity from the bayonet opening; and under the condition that the electrolyte in the soft package battery flows into the vacuum tube from the liquid leakage port, the baffle structure is used for plugging the liquid leakage port.

Optionally, the baffle structure comprises a baffle main body, the baffle main body comprises a baffle, an end plate and a sealing gasket, a sealing groove is formed in the upper support, and a first limiting groove and a second limiting groove which are positioned on two sides of the liquid leakage opening are formed in the lower support;

under the condition that the bayonet component punctures an air bag of a soft package battery through the bayonet opening and enables electrolyte in the soft package battery to flow into the sealing cavity from the bayonet opening, one side of the end plate is clamped with the first limiting groove, and the other side of the end plate is abutted against the sealing groove, so that the baffle plate structure seals the opening; electrolyte in the laminate polymer battery is followed the weeping mouth flows in under the condition of vacuum tube, one side of end plate with the joint of second spacing groove, and sealed the pad cover in on the weeping mouth, so that baffle structure shutoff the weeping mouth.

Optionally, the condensation component is connected between the recovery bin and the second vacuumizing component, and the condensation component is used for collecting condensable components between the recovery bin and the second vacuumizing component.

Optionally, the condensation assembly comprises a condensation pipe, the condensation pipe has a first end connected with the recovery bin and a second end connected with the second vacuum-pumping assembly, and the height of the second end is greater than that of the first end.

Optionally, the condensing assembly includes a condensing pipe and a collecting bin, one end of the condensing pipe is connected to the recovering bin, and the collecting bin is connected between the other end of the condensing pipe and the second vacuum-pumping assembly.

Optionally, a second switch assembly is disposed between the condensing assembly and the second vacuum pumping assembly.

Optionally, a circulating dry gas is introduced into the condensing assembly, and the dry gas is used for collecting condensable components between the recovery bin and the second vacuum-pumping assembly in the circulating process.

Optionally, the battery tray is used for transferring the soft package battery to the accommodating cavity.

The utility model has the technical effects that:

the utility model provides an electrolyte recovery unit for laminate polymer battery, recovery unit includes base, first evacuation subassembly and second evacuation subassembly, retrieves storehouse and clamp plate assembly. And under the condition that a soft package battery is arranged in the accommodating cavity, the first vacuumizing assembly sucks the vacuum degree in the accommodating cavity to a set vacuum degree so as to ensure the vacuum degree of the accommodating cavity and the recovery bin. And the clamp plate subassembly can exert pressure give laminate polymer battery to make laminate polymer battery's waste gas laminate polymer battery as far as possible discharge laminate polymer battery, electrolyte in laminate polymer battery moreover retrieve extremely the in-process in recovery bin can keep the vacuum in recovery bin has guaranteed when discharging waste gas among the laminate polymer battery recovery unit is to the recovery purity and the recycle ratio of following waste gas discharge electrolyte.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is an exploded view of an electrolyte recovery device for a pouch battery according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a schematic view of an electrolyte recovery device for a pouch battery according to an embodiment of the present invention;

FIG. 4 is a partial schematic view of FIG. 3;

fig. 5 is a partial perspective view of an electrolyte recovery device for a pouch battery according to an embodiment of the present invention;

fig. 6 is a perspective view of a baffle main body of an electrolyte recovery device for a pouch battery according to an embodiment of the present invention;

fig. 7 is a front view of a baffle main body of an electrolyte recovery device for a pouch battery according to an embodiment of the present invention;

fig. 8 is a side view of a baffle main body of an electrolyte recovery device for a pouch battery according to an embodiment of the present invention;

fig. 9 is a top view of a lower bracket of an electrolyte recovery device for a pouch battery according to an embodiment of the present invention;

fig. 10 is a bottom view of a lower bracket of an electrolyte recovery device for a pouch battery according to an embodiment of the present invention;

fig. 11 is an oblique schematic view of a lower bracket of an electrolyte recovery device for a pouch battery according to an embodiment of the present invention;

fig. 12 is a perspective view of an upper bracket of an electrolyte recovery device for a pouch battery according to an embodiment of the present invention;

fig. 13 is a top view of an upper bracket of an electrolyte recovery device for a pouch battery according to an embodiment of the present invention;

fig. 14 is a bottom view of an upper bracket of an electrolyte recovery device for a pouch battery according to an embodiment of the present invention;

fig. 15 is the embodiment of the utility model provides a slope schematic diagram of an upper bracket for laminate polymer battery's electrolyte recovery unit.

Wherein: 1. a base; 101. an accommodating chamber; 102. a vacuum port; 103. an upper cover; 104. a lower cover; 2. a second vacuum pumping assembly; 3. a recovery bin; 4. a platen assembly; 41. pressing a plate; 42. a platen drive; 5. a bayonet component; 51. a bayonet; 52. a bayonet drive; 6. a package assembly; 61. a first package; 62. a second package; 7. a vacuum tube; 8. recovering the bracket; 81. an upper bracket; 811. a barbed knife edge; 812. a sealing groove; 82. a lower bracket; 821. a first limit groove; 822. a second limit groove; 823. a liquid leakage port; 83. a bracket driving member; 9. a first switch assembly; 10. a condensing assembly; 1001. a condenser tube; 1002. a collecting bin; 11. a second switch assembly; 12. a battery tray; 13. a baffle structure; 131. a baffle body; 1311. a baffle plate; 1312. an end plate; 1313. a gasket; 132. a baffle drive member; 14. and (4) a soft package battery.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1 to 5, the embodiment of the utility model provides an electrolyte recovery unit for laminate polymer battery, recovery unit includes:

base 1, evacuation subassembly, recovery storehouse 3 and clamp plate subassembly 4, the evacuation subassembly includes first evacuation subassembly and second evacuation subassembly 2, be provided with the chamber 101 that holds that is used for holding laminate polymer battery 14 on the base 1, recovery unit can put into laminate polymer battery 14 earlier when retrieving the electrolyte in laminate polymer battery 14 hold in the chamber 101.

Specifically, referring to fig. 1 and 2, the base 1 includes an upper cover 103 and a lower cover 104 that are fastened to each other, the upper cover 103 and the lower cover 104 may be detachably connected by a screw or a snap, and a gap between the upper cover 103 and the lower cover 104 may be sealed by a gasket. The containing cavity 101 is formed between the upper cover 103 and the lower cover 104, a vacuum port 102 may be disposed on the upper cover 103 or the lower cover 104, and the vacuum pumping assembly may adjust a vacuum degree in the containing cavity 101 through the vacuum port 102.

Referring to fig. 1, a first vacuum pumping assembly (not shown in the figure) may be located outside and on the base 1, and the first vacuum pumping assembly is communicated to the accommodating chamber 101 and is used for pumping the vacuum degree in the accommodating chamber 101 to a set vacuum degree, that is, the first vacuum pumping assembly may reduce the air concentration in the accommodating chamber 101, so as to prevent the electrolyte in the pouch cell 14 from contacting with the air when flowing to the accommodating chamber 101, and ensure the purity of electrolyte recovery. The value of the set vacuum degree can reach a low vacuum degree, for example, the value range of the set vacuum degree can be 1-100Pa, so that the recovery effect of the electrolyte in the soft package battery 14 is ensured. Referring to fig. 3 and 4, the recycling bin 3 is connected between the second vacuum-pumping assembly 2 and the accommodating cavity 101, and the electrolyte in the pouch battery 14 can be recycled by the recycling bin 3 after flowing into the recycling bin 3. And when the first vacuumizing assembly sucks the vacuum degree in the accommodating cavity 101 to the set vacuum degree, the second vacuumizing assembly 2 can vacuumize the recovering cavity 3 because the recovering cavity 3 is connected between the second vacuumizing assembly 2 and the accommodating cavity 101, so that the purity of the electrolyte in the recovering cavity 3 is ensured.

Referring to fig. 1, the platen assembly 4 is connected to the base 1, and the platen assembly 4 is configured to press the pouch battery; the pressing plate assembly 4 specifically comprises a pressing plate 41 and a pressing plate driving member 42, the pressing plate driving member 42 may be a pneumatic shaft or an electric shaft, and the pressing plate driving member 42 may apply pressure to the pouch battery in the process of driving the pressing plate 41 to approach the pouch battery. And clamp plate assembly 4 is exerting pressure for laminate polymer battery can also compress tightly laminate polymer battery during, utilize clamp plate assembly 4 with frictional force between the laminate polymer battery reaches laminate polymer battery's spacing effect.

Hold and be provided with laminate polymer battery 14 in the chamber 101 under the condition, first evacuation subassembly will hold the vacuum suction in the chamber 101 to setting for the vacuum, in order to guarantee hold chamber 101 with the vacuum of recovery bin 3. And clamp plate assembly 4 can exert pressure and give laminate polymer battery 14 to retrieve electrolyte when making laminate polymer battery 14 in the exhaust waste gas retrieve extremely retrieve storehouse 3, moreover electrolyte in laminate polymer battery 14 is retrieved extremely the in-process of retrieving storehouse 3 can be so that electrolyte contactless air, has guaranteed the purity and the recovery efficiency of electrolyte, has improved the utilization ratio of electrolyte on environmental protection's basis, has saved laminate polymer battery 14's preparation cost.

The embodiment of the utility model provides a recovery unit includes base 1, evacuation subassembly, recovery storehouse 3 and clamp plate subassembly 4, be provided with the chamber 101 that holds that is used for holding laminate polymer battery on the base 1, first evacuation subassembly intercommunication extremely hold chamber 101, and be used for with vacuum suction in holding chamber 101 is to setting for the vacuum, recovery storehouse 3 connect in second evacuation subassembly 2 with hold between the chamber 101. Hold under the condition that is provided with laminate polymer battery in the chamber 101, first evacuation subassembly will vacuum suction to the settlement vacuum in holding chamber 101, in order to guarantee hold chamber 101 with the vacuum of recovery bin 3. And clamp plate assembly 4 can exert pressure and give laminate polymer battery to retrieve electrolyte when making laminate polymer battery exhaust waste gas extremely retrieve recovery storehouse 3, electrolyte in laminate polymer battery moreover retrieve extremely the in-process of recovery storehouse 3 can keep holding the vacuum in the chamber 101 for electrolyte contactless air has been guaranteed recovery unit has improved the utilization ratio of electrolyte to the recovery purity and the recovery efficiency of electrolyte on environmental protection's basis, has provided extra economic value, has saved laminate polymer battery's preparation cost.

In addition, the first vacuumizing assembly and the second vacuumizing assembly 2 can be both air pumps, and when the second vacuumizing assembly 2 is an air pump, air in the accommodating cavity 101 and the recycling bin 3 is pumped by the air pump, so that the vacuum degrees of the accommodating cavity 101 and the recycling bin 3 are guaranteed. Electrolyte among the laminate polymer battery follow hold chamber 101 and flow to the in-process of retrieving storehouse 3 has also avoided electrolyte with other subassembly contacts and corrode recovery unit, have guaranteed recovery unit's life.

Optionally, referring to fig. 3 and 4, the recycling device further comprises a bayonet assembly 5, the bayonet assembly 5 is connected to the base 1, and the bayonet assembly 5 is used for puncturing an air bag of the pouch battery when the vacuum degree in the accommodating cavity 101 reaches a set vacuum degree, so that part of free electrolyte in the pouch battery is discharged from a puncturing opening of the air bag along with the waste gas.

Specifically, the bayonet component 5 may include a bayonet 51 and a bayonet driving member 52, the bayonet driving member 52 may be a pneumatic shaft or an electric shaft, and the bayonet driving member 52 may cut the air bag of the pouch battery when the bayonet 51 is driven to approach the air bag of the pouch battery, so that the electrolyte in the pouch battery flows out of the air bag. For example, when the bayonet 51 is close to the air bag of the pouch battery, a puncture is formed in the air bag of the pouch battery, so that part of the free electrolyte in the pouch battery is discharged from the puncture of the air bag along with the waste gas, and the purpose of recycling the electrolyte while discharging the waste gas in the pouch battery is achieved.

Optionally, referring to fig. 3 and 4, the recycling device further includes a packaging assembly 6, the packaging assembly 6 is connected to the base 1, and the packaging assembly 6 is used for packaging the air bag after the electrolyte in the soft package battery flows out from the air bag, so that the soft package battery is sealed, specifically, a battery cell in the soft package battery is sealed by sealing the aluminum plastic film. Specifically, after the electrolyte in the pouch battery flows out of the air bag, in order to prevent the internal cell of the pouch battery from contacting air before the air bag cutting process, the pouch battery may be sealed. And encapsulation subassembly 6 can be including encapsulation head and the first driving piece of encapsulation, and the first driving piece of encapsulation can be pneumatic shaft or electronic axle, and the first driving piece of encapsulation is when the drive encapsulation head is close the piercing opening of air pocket, can encapsulate the air pocket through the mode of high temperature heat-seal, guarantees laminate polymer battery's sealed effect.

In a specific embodiment, the airbag is used as an extension of an aluminum plastic film on a soft package battery, an inner layer of the aluminum plastic film of the airbag part can contain pp glue, and when the packaging head of the packaging assembly 6 is close to a puncture of the airbag, the aluminum plastic film of the airbag part is subjected to heat sealing through a high-temperature hot melting mode.

Additionally, the utility model discloses an among the recovery unit, through integrating clamp plate subassembly 4, bayonet subassembly 5 and encapsulation subassembly 6 to base 1, improving on the basis of recovery unit integrated level, increased recovery unit is to the recovery effect of electrolyte.

Alternatively, referring to fig. 3 and 4, the packaging assembly 6 includes a first packaging member 61 and a second packaging member 62, and when the packaging assembly 6 packages the air bag, the first packaging member 61 and the second packaging member 62 abut against the air bag from opposite sides of the air bag.

Specifically, the first package 61 may include a first package head and a first package head driving member, the first package head driving member may be a pneumatic shaft or an electric shaft, and the first package head driving member may drive the first package head to approach the puncture opening of the air bag; the second package 62 may also include a second package head and a second package head driving member, the second package head driving member may be a pneumatic shaft or an electric shaft, and the second package head driving member may drive the second package head to approach the puncture opening of the air bag.

Laminate battery's air pocket can be the plastic-aluminum bag, and first encapsulation head and second encapsulation head are respectively when on first encapsulation head driving piece and the drive of second encapsulation head driving piece down from the relative both sides butt of air pocket to the air pocket, can make the sticking together after the aluminium-plastic layer takes place the hot melt deformation around the puncture mouth of air pocket, and then reach the mesh of encapsulating the air pocket.

Optionally, referring to fig. 3 and 4, the recycling bin 3 is communicated with the accommodating cavity through a vacuum tube 7, a recycling bracket 8 is arranged on one side of the vacuum tube 7 close to the accommodating cavity, and a first switch assembly 9 is arranged on one side of the vacuum tube 7 close to the recycling bin 3.

Specifically, the vacuum tube 7 may be made of teflon to prevent the vacuum tube 7 from being corroded by electrolyte, HF acid, and other substances. And retrieve and be provided with the through-hole on the support 8, laminate polymer battery's electrolyte is when flowing into and hold the chamber, can flow into vacuum tube 7 through the through-hole on retrieving the support 8 in, and then is retrieved by recovery storehouse 3. The on-off state of the first switch assembly 9 can be determined according to the exhaust gas in the pouch battery and the recovery state of the electrolyte, for example, after the exhaust gas in the pouch battery is exhausted and part of the free electrolyte flows into the vacuum tube 7, the liquid leakage port 823 can be covered by the sealing gasket 1313 on the baffle, at this time, the second vacuumizing assembly 2 can be used for vacuumizing the recovery bin 3, and then the first switch assembly 9 is opened; after the electrolyte in the vacuum tube 7 flows into the recycling bin 3, the first switch assembly 9 can be closed to ensure the vacuum degree in the recycling bin 3.

Alternatively, referring to fig. 2, 9 to 15, the recycling bracket 8 comprises an upper bracket 81 and a lower bracket 82 which are connected with each other, and a sealed cavity is formed between the upper bracket 81 and the lower bracket 82;

the upper bracket 81 is provided with a bayonet 811 communicated with the sealed cavity, and the lower bracket 82 is provided with a leakage orifice 823 communicated with the vacuum tube 7.

Specifically, the bayonet driving part 52 may place the air pocket of the pouch battery on the upper surface of the upper bracket 81 and the bayonet 51 may be opposite to the bayonet hole 811 when driving the bayonet 51 to approach the air pocket of the pouch battery and cut the air pocket of the pouch battery. When the bayonet 51 is close to and punctures the air bag of the soft package battery, the electrolyte at the puncture position of the air bag can flow into the sealing cavity from the puncture opening 811, and then flows into the vacuum tube 7 from the leakage opening 823 and is recovered by the recovery bin 3, so that the recovery efficiency of the electrolyte is ensured.

Optionally, referring to fig. 2, 6 to 9, the recycling device further includes a baffle structure 13, an opening communicating with the sealed cavity is provided on the upper bracket 81 and/or the lower bracket 82, and the baffle structure 13 is connected to the sealed cavity through the opening;

the baffle structure 13 is used for closing the opening under the condition that the bayonet component 5 punctures the air bag of the pouch battery through the bayonet hole 811 and enables the electrolyte in the pouch battery to flow into the sealed cavity from the bayonet hole 811; when the electrolyte in the pouch battery flows into the vacuum tube 7 from the liquid leakage port 823, the baffle structure 13 is used to block the liquid leakage port 823.

In particular, the seal may be constructed similar to a bellows, and the baffle structure 13 may be similar to a pull tab on a bellows. In the case that the bayonet component 5 pierces the air bag of the pouch battery through the bayonet hole 811 and causes the electrolyte in the pouch battery to flow into the sealed cavity from the bayonet hole 811, the baffle structure 13 may be pulled toward and form a seal with the opening, so that the circumferential inner wall of the sealed cavity remains intact. And under the condition that the electrolyte in the soft package battery flows into the vacuum tube 7 from the liquid leakage port 823, the baffle structure 13 is used for blocking the liquid leakage port 823, so that on the basis of ensuring the vacuum degree of the vacuum tube 7, air is prevented from entering the vacuum tube 7 from a sealed cavity when the base 1 is opened, and the electrolyte recovery efficiency is ensured.

Optionally, referring to fig. 6 to 15, the baffle structure 13 includes a baffle main body 131, the baffle main body 131 includes a baffle 1311, an end plate 1312, and a gasket 1313, the upper bracket 81 is provided with a sealing groove 812, and the lower bracket 82 is provided with a first limiting groove 821 and a second limiting groove 822 located on two sides of the leakage port 823;

when the bayonet component 5 pierces the air bag of the pouch battery through the bayonet hole 811 and causes the electrolyte in the pouch battery to flow into the sealed cavity from the bayonet hole 811, one side of the end plate 1312 is in snap-fit connection with the first limiting groove 821, and the other side of the end plate 1312 abuts against the sealed groove 812, so that the baffle structure 13 closes the opening; when the electrolyte in the pouch battery flows into the vacuum tube 7 from the liquid leakage port 823, one side of the end plate 1312 is clamped with the second limiting groove 822, and the sealing gasket 1313 covers the liquid leakage port 823, so that the baffle structure 13 blocks the liquid leakage port 823.

Specifically, the baffle structure 13 may further include a baffle driving member 132 connected to the baffle main body 131, and the baffle driving member 132 may be a pneumatic component or an electric component for driving the baffle main body 131 to move. The end plate 1312 of the barrier main body 131 may be coupled to one side of the barrier 1311 to be perpendicular to the barrier 1311, and the gasket 1313 may be attached to the barrier 1311.

In addition, the recycling bracket 8 may further include a bracket driving member 83, when the bayonet component 5 pierces the air bag of the pouch battery through the bayonet hole 811 and causes the electrolyte in the pouch battery to flow into the sealed cavity from the bayonet hole 811, the bracket driving member 83 may drive the upper bracket 81 and the lower bracket 82 to move together, such that one side of the end plate 1312 is in contact with the first limiting groove 821, and the other side of the end plate 1312 is in contact with the sealed cavity 812, so as to achieve the effect that the baffle structure 13 closes the opening; and after the electrolyte in the pouch battery completely flows into the sealed cavity, the bracket driving member 83 may drive the upper bracket 81 and the lower bracket 82 to be separated from the barrier main body 131.

When the electrolyte in the pouch battery flows into the vacuum tube 7 from the liquid leakage port 823, the baffle main body 131 can make one side of the end plate 1312 opposite to the second limiting groove 822 under the driving of the baffle driving member 132, and the bracket driving member 83 can also drive the upper bracket 81 and the lower bracket 82 to move together, so that one side of the end plate 1312 is clamped with the second limiting groove 822, and the sealing gasket 1313 covers the liquid leakage port 823, so that the baffle structure 13 blocks the liquid leakage port 823.

Further, a sealing washer may be disposed on the end plate 1312, such that one side of the end plate 1312 is engaged with the first limiting groove 821, and the other side of the end plate 1312 is abutted against the sealing groove 812 to maintain a good sealing effect.

Optionally, the recycling device further comprises a condensing assembly 10, the condensing assembly 10 is connected between the recycling bin 3 and the second vacuum-pumping assembly 2, and the condensing assembly 10 is used for collecting condensable components between the recycling bin 3 and the second vacuum-pumping assembly 2.

Specifically, electrolyte among the laminate polymer battery is at the in-process that flows to recovery storehouse 3, the partial waste gas that carries in the electrolyte can flow to second evacuation subassembly 2, and be accompanied with a small amount of gaseous state electrolyte and volatile solvent in the waste gas, in order to avoid gaseous state electrolyte and volatile solvent to the damage of second evacuation subassembly 2 and the pollution to the environment, can be at waste gas by second evacuation subassembly 2 exhaust in-process, collect gaseous state electrolyte and volatile solvent after condensing by gaseous state component for liquid component again through condensation subassembly 10, improve recovery unit is carrying out the feature of environmental protection among the recovery process to electrolyte.

Optionally, referring to fig. 3 and 5, the condensing assembly 10 includes a condensing pipe 1001, and the condensing pipe 1001 is connected between the recycling bin 3 and the second vacuum-pumping assembly 2 in an inclined manner.

In particular, the condensation duct 1001 may have a first end connected to the recycling bin 3 and a second end connected to the second vacuum pumping assembly 2, and the height of the second end may be greater than that of the first end, that is, the second end is higher than the first end. That is, the electrolyte and the volatile solvent of the liquid component in the condensation pipe 1001 can be condensed into the electrolyte and the volatile solvent of the liquid component by the inclined condensation pipe 1001, and then the electrolyte and the volatile solvent of the liquid component can be recovered by the collection chamber 1002.

Optionally, referring to fig. 4, the condensing assembly 10 includes a condensing pipe 1001 and a collecting bin 1002, one end of the condensing pipe 1001 is connected to the recovering bin 3, and the collecting bin 1002 is connected between the other end of the condensing pipe 1001 and the second vacuum-pumping assembly 2.

Specifically, the abandonment that carries in the electrolyte is in the flow direction second evacuation subassembly 2's in-process, gaseous state electrolyte and the volatile solvent in waste gas and the waste gas can meet condenser pipe 1001 earlier, condenser pipe 1001 can be liquid-cooled pipe or air-cooled pipe, and condenser pipe 1001 can be liquid component's electrolyte and volatile solvent condensation with gaseous component's electrolyte and volatile solvent, then retrieves liquid component's electrolyte and volatile solvent through collecting bin 1002 to the waste gas that makes through second evacuation subassembly 2 emission accords with the environmental protection requirement.

Optionally, referring to fig. 3 and 4, a second switch assembly 11 is disposed between the condensing assembly 10 and the second vacuum pumping assembly 2.

Specifically, the collection bin 1002 is used for recovering the electrolyte and the volatile solvent of the liquid component, and since the collection bin 1002 is connected between the other end of the condensation pipe 1001 and the second vacuum pumping module 2, when the electrolyte and the volatile solvent collected in the collection bin 1002 are more, in order to avoid the electrolyte and the volatile solvent from flowing to the second vacuum pumping module 2 after overflowing the collection bin 1002, the second switch module 11 may be arranged between the condensation module 10 and the second vacuum pumping module 2, and the electrolyte and the volatile solvent flowing to the second vacuum pumping module 2 are blocked by the second switch module 11, so as to ensure the operation stability and the service life of the second vacuum pumping module 2.

In addition, the first switch assembly 9 and the second switch assembly 11 may both use a sealing gasket made of teflon rubber to protect the first switch assembly 9 and the second switch assembly 11 from being corroded by the electrolyte of the first switch assembly 9 and the second switch assembly 11.

Optionally, a circulating dry gas is introduced into the condensing assembly 10, and the dry gas is used for collecting condensable components between the recovery bin 3 and the second vacuum-pumping assembly 2 during the circulation process.

Specifically, the condensable components between the recycling bin 3 and the second vacuum-pumping assembly 2 can also be carried out between the recycling bin 3 and the second vacuum-pumping assembly 2 through a circulating gas, for example, by introducing a circulating dry gas such as dry nitrogen or an inert gas into the condensing assembly 10, the dry gas can carry out the condensable components between the recycling bin 3 and the second vacuum-pumping assembly 2 and collect the condensable components, so as to ensure the environmental protection of the components flowing between the recycling bin 3 and the second vacuum-pumping assembly 2.

Optionally, the recycling device further comprises a battery tray 12, and the battery tray 12 is used for transferring the soft package battery to the accommodating cavity.

Specifically, recovery unit can put into laminate polymer battery earlier when retrieving the electrolyte in the laminate polymer battery hold in the chamber. And laminate polymer battery to the in-process that holds the chamber and shift, can put into battery tray 12 with laminate polymer battery earlier, battery tray 12 when pushing away hold the chamber alright with the realization hold the chamber to laminate polymer battery accomodate. And when the battery tray 12 is pushed into the accommodating cavity from the opening of the accommodating cavity, the upper cover 103 and the lower cover 104 of the base 1 can be buckled to close the opening of the accommodating cavity, so that the sealing performance of the accommodating cavity is ensured.

Although some specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. The utility model provides an electrolyte recovery unit for laminate polymer battery which characterized in that includes:

the battery pack comprises a base (1), wherein an accommodating cavity (101) for accommodating a soft package battery is formed in the base (1);

the first vacuum-pumping assembly and the second vacuum-pumping assembly (2) are communicated to the accommodating cavity (101) and are used for pumping the vacuum degree in the accommodating cavity (101) to a set vacuum degree;

the recovery bin (3), the recovery bin (3) is connected between the second vacuumizing assembly (2) and the accommodating cavity (101);

a platen assembly (4), wherein the platen assembly (4) is connected to the base (1), and the platen assembly (4) is configured to press the pouch cell;

hold and be provided with laminate polymer battery's condition in chamber (101) under, first evacuation subassembly will hold the vacuum suction in chamber (101) to setting for the vacuum, clamp plate assembly (4) are exerted pressure and are given laminate polymer battery to retrieve electrolyte when making the discharge waste gas among the laminate polymer battery extremely retrieve storehouse (3).

2. The recycling device according to claim 1, further comprising a bayonet component (5), wherein the bayonet component (5) is connected to the base (1), and the bayonet component (5) is used for puncturing an air bag of the pouch battery when the vacuum degree in the accommodating cavity (101) reaches a set vacuum degree, so that part of electrolyte in the pouch battery is discharged from a puncturing opening of the air bag along with the waste gas.

3. The recycling device according to claim 2, further comprising a packaging component (6), wherein the packaging component (6) is connected to the base (1), and the packaging component (6) is used for packaging the air bag after the electrolyte in the soft-package battery flows out of the air bag, so that the soft-package battery is closed.

4. A recycling apparatus according to claim 3, wherein the packing member (6) comprises a first packing member (61) and a second packing member (62), and in the case where the packing member (6) packs the air bag, the first packing member (61) and the second packing member (62) abut to the air bag from opposite sides thereof.

5. A recycling device according to claim 3, characterized in that the recycling bin (3) is communicated with the accommodating cavity (101) through a vacuum tube (7), a recycling bracket (8) is arranged at one side of the vacuum tube (7) close to the accommodating cavity (101), and a first switch assembly (9) is arranged at one side of the vacuum tube (7) close to the recycling bin (3).

6. The recovery device according to claim 5, characterized in that the recovery support (8) comprises an upper support (81) and a lower support (82) connected to each other, the upper support (81) and the lower support (82) forming a sealed chamber therebetween;

the upper support (81) is provided with a bayonet opening (811) communicated with the sealing cavity, and the lower support (82) is provided with a liquid leakage opening (823) communicated with the vacuum tube (7).

7. A recovery device according to claim 6, further comprising a baffle structure (13), wherein the upper bracket (81) and/or the lower bracket (82) is provided with an opening communicating with the sealed chamber, and the baffle structure (13) is connected to the sealed chamber through the opening;

the baffle structure (13) is used for closing the opening under the condition that the bayonet component (5) punctures the air bag of the soft package battery through the bayonet edge (811) and enables the electrolyte in the soft package battery to flow into the sealing cavity from the bayonet edge (811); and under the condition that the electrolyte in the soft package battery flows into the vacuum tube (7) from the liquid leakage opening (823), the baffle structure (13) is used for blocking the liquid leakage opening (823).

8. The recycling device according to claim 7, wherein the baffle structure (13) comprises a baffle main body (131), the baffle main body (131) comprises a baffle (1311), an end plate (1312) and a sealing gasket (1313), a sealing groove (812) is arranged on the upper bracket (81), and a first limiting groove (821) and a second limiting groove (822) which are positioned on two sides of the leakage port (823) are arranged on the lower bracket (82);

when the bayonet component (5) pierces the air bag of the soft package battery through the bayonet edge (811) and enables the electrolyte in the soft package battery to flow into the sealing cavity from the bayonet edge (811), one side of the end plate (1312) is clamped with the first limiting groove (821), and the other side of the end plate (1312) is abutted with the sealing groove (812), so that the baffle structure (13) closes the opening; and under the condition that the electrolyte in the soft package battery flows into the vacuum tube (7) from the liquid leakage port (823), one side of the end plate (1312) is clamped with the second limiting groove (822), and the sealing gasket (1313) covers the liquid leakage port (823), so that the liquid leakage port (823) is sealed by the baffle structure (13).

9. A recovery device according to claim 1, further comprising a condensation assembly (10), said condensation assembly (10) being connected between said recovery bin (3) and said second evacuation assembly (2), said condensation assembly (10) being adapted to collect condensable components between said recovery bin (3) and said second evacuation assembly (2).

10. A recovery device according to claim 9, characterized in that the condensation assembly (10) comprises a condensation duct (1001), the condensation duct (1001) having a first end connected to the recovery bin (3) and a second end connected to the second evacuation assembly (2), the second end having a height greater than the first end.

11. A recycling apparatus according to claim 9, characterized in that said condensation unit (10) comprises a condensation duct (1001) and a collection bin (1002), one end of said condensation duct (1001) being connected to said recycling bin (3), said collection bin (1002) being connected between the other end of said condensation duct (1001) and said second vacuum pumping unit (2).

12. A recovery device according to claim 9, characterized in that a second switching assembly (11) is provided between the condensation assembly (10) and the second evacuation assembly (2).

13. A recovery device according to claim 9, characterized in that said condensation assembly (10) is internally crossed by a drying gas which is circulated and is intended to collect, during the circulation, condensable components between said recovery bin (3) and said second evacuation assembly (2).

14. The recycling apparatus according to claim 1, further comprising a battery tray (12), wherein said battery tray (12) is used for transferring said pouch battery to said containing cavity (101).